The Seacoast United Mariners will compete in the National Premier Soccer League for the 2017 season, as part of the Northeast-Atlantic White Division. Opponents within the division for the 2017 season include: Kingston Stockade FC (NY), Boston City FC (MA), NY Athletic Club, Rhode Island Reds (RI), and Hartford City FC (CT). The Seacoast United Mariners are the first NPSL franchise in Maine.